Red mountain jade, black tourmaline necklace (19 inches) with a sterling silver toggle clasp. The matching earrings are on sterling silver leverbacks with a 1.4-inch drop. Red mountain jade is a gemstone of color-enhanced high-grade dolomite marble from Asia. Both red mountain jade and tourmaline are gemstones. There are two shapes of red mountain jade beads: flattened ovals (25 x 18 mm) and flattened round beads (11 mm in diameter).The black tourmaline beads are flattened cylinders (16 x 9 mm).There are also 4 mm black faceted beads in the necklace. Red mountain jade is the gemstone of October-November. Tourmaline is a birthstone of October. Modern Round Gemstone Beads Jewelry, Elegant Sterling Silver Clasp Pendant Jewelry, Elegant Oval Gemstone Beads Jewelry, Adjustable Sterling Silver Jewelry With Gemstone, Adjustable Sterling Silver Gemstone Jewelry, Sterling Silver Clasp Pendant Fine Jewelry, Fine Jewelry Pendant With Sterling Silver Clasp, Fine Jewelry Sterling Silver Clasp Pendant, Minimalist Jewelry With Natural Stones